Datadog APM and Distributed Tracing Fundamentals Exam Preparation Material | Datadog APM and Distributed Tracing Fundamentals

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Question#1

How do you turn on the Datadog Continuous Profiler?

A. Set DD_PROFILING_ENABLED to true on the tracer.

B. It's already enabled when using a tracing library by default.

C. Run language-specific startup commands for the profiling library.

Explanation:
For Java, enable the profiler by setting the -Ddd.profiling.enabled flag or DD_PROFILING_ENABLED environment variable to true. Other languages also support DD_PROFILING_ENABLED.
See: https://docs.datadoghq.com/profiler/enabling/java?tab=datadog

Question#2

What information do tracer debug logs contain?

A. Whether or not traces were sent to the Datadog Agent

B. Whether or not the application has high load

C. Whether or not the Datadog Agent has high load

D. All the choices are included in tracer debug logs.

Explanation:
The tracer debug logs contain information for diagnosing tracer issues or audit trace data. It does not include information about the load on the Datadog Agent nor the application being monitored. The best answer is whether or not traces were sent to the Datadog Agent.
See: https://docs.datadoghq.com/tracing/troubleshooting/tracer_debug_logs/

Question#3

How long are traces retained?

A. 7 days

B. 15 days

C. 1 month

D. Depends on the contract plan

Explanation:
Trace retention corresponds to indexed spans. The default retention for indexed spans depends on the plan agreed upon in your Datadog contract.
See: https://docs.datadoghq.com/developers/guide/data-collection-resolution-retention/

Question#4

How do you manually flag a span as erroneous when instrumenting Ruby applications?

A. Call span.set_error and pass in the Exception Object.

B. Set the tag on the apm_config of the Datadog Agent via regex.

C. Use the Datadog::Tracing.trace method.

D. This is not supported.

Explanation:
See: https://docs.datadoghq.com/tracing/trace_collection/custom_instrumentation/ruby?tab=manuallyinstrumentedspans#setting-errors-on-a-span

Question#5

What is the Go Datadog Trace Library’s version support policy for Go versions?

A. The two latest releases of Go are fully supported.

B. The three latest releases of Go are fully supported.

C. The second and third latest releases of Go are fully supported.

D. The fourth and fifth latest releases of Go are fully supported.

Explanation:
The two latest releases of Go are fully supported, while the third newest release is considered in maintenance.
See: https://docs.datadoghq.com/tracing/trace_collection/compatibility/go/

Exam Code: Datadog APM and Distributed Tracing Fundamentals
Q & A: 180 Q&As Updated: Nov 03,2026

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Work through independently developed questions designed to strengthen your understanding of technical scenarios and decision-making.

Identify Knowledge Gaps

Use your results and the provided explanations to find weaker areas and focus your study more effectively.

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Exam Code: Datadog APM and Distributed Tracing Fundamentals
Q & A: 180 Q&As
Updated: Nov 03,2026